Digital orthophotos Hamburg

Current information: No aerial survey took place in 2023. The Digital Orthophoto 2023 was therefore derived from several satellite scenes. Satellite system: WorldView-3 Recording times: 02/23; HH Altengamme: 09/23 GSD: 0.30 m processed to 0.15 m Digital Orthophoto 2023 is subject to license terms and is not available for download. [Maxar products. Dynamic Product © 2023 Maxar Technologies.] DOP Explanation: The aerial photographs are used to produce mosaic and georeferenced, coloured digital orthophotos (RGBI) with different resolutions and tile sizes. Orthophotos are geometrically equalized images based on a digital terrain model that combine the appearance of an aerial image with the geometric properties of a map. Because they are also available in digital form, they can be issued at different scales and used like a card. Objects that are located directly on the earth's surface are displayed in the correct position. Objects that protrude beyond the level of the earth's surface are sometimes not reproduced correctly due to the manufacturing process for digital orthophotos. Particularly suitable as a spatially exact, pictorial reference basis for the construction of geoinformation systems and for linking with or as background information for spatially specific subject-specific data for specialist information systems as well as for spatial planning of all kinds. Areas of application are all areas of responsibility for which spatial reference is required, including energy, forestry and agriculture, administration, demography, housing, land use, regional and route planning, road construction and management, facility management, traffic navigation and fleet management, transport, mining, hydrology and water management, ecology, environmental protection, military, geology and geodesy, but also culture, recreation and leisure and communication. RGB (Red Green Blue): The ribbon combination of red, green and blue reproduces the human perception of color. Healthy vegetation becomes green, urban areas become white/grey and water areas become blue, depending on the turbidity. CIR (Color Infrared): The band combination of near infrared, red and green highlights the vegetation. This reflects particularly strongly due to the chlorophyll content of the plants in the near infrared range and is reddish. Urban areas appear cyan blue/grey and water areas dark blue.